[PATCH 0/4] emacs: Various fixes.

[Alex Kost]

This patchset fixes a couple of issues discovered in bug #22550 (see the
bottom of <http://debbugs.gnu.org/cgi/bugreport.cgi?msg=14;bug=22550>).

[PATCH 1/4] emacs: Factorize searching for Emacs packages.
[PATCH 2/4] emacs: Find Emacs packages in a system profile.

[PATCH 3/4] system: Fix EMACSLOADPATH.

  This is an easy fix, however I've just thought that we can get rid of
  EMACSLOADPATH completely.  Since now our Emacs can load packages from
  guix directories ("~/.guix-profile" and "/run/current-system/profile")
  there is no need to use "/etc/emacs/site-start.el" anymore, because Emacs
  will load "guix-autoloads.el" and "geiser-autoloads.el" from a system
  profile.

  So I think this patch is OK as a current fix, but eventually we should
  remove "guix-init.el" and "/etc/emacs/site-start.el".  I'll send a
  patch for it later.

[PATCH 4/4] doc: Document 'guix-edit' Emacs command.